At the height of mass protests last year in Ferguson, Missouri, the state’s National Guard referred to demonstrators as “enemy forces” and “adversaries,” according to internal documents obtained by CNN.

Through Freedom of Information Act requests, the news network obtained files authored by the Missouri National Guard last year as it readied to deploy in the St. Louis suburb of Ferguson after the August shooting death of unarmed teenager Michael Brown, and the demonstrations that followed.

Protesters were described by the National Guard as “enemy forces” and “adversaries” in the documents, CNN reported on Friday this week.

The documents are ripe with militarized language, the network reported, once again causing concern among local officials following a months-long series of rallies marred by violent altercations between law enforcement and protesters.